Acids And Salts

Question 1

Acid + base

Answer 1

Salt + water

Question 2

Acid + alkali

Answer 2

Salt + water

Question 3

Acid + metal

Answer 3

Salt + hydrogen

Question 4

Acid + carbonate

Answer 4

Salt + carbon dioxide + water

Question 5

What are bases usually in general reactions

Answer 5

Metal oxides

Question 6

What are alkalis generally in general reactions

Answer 6

Metal hydroxides

Question 7

What are carbonates generally in general reactions

Answer 7

Metal carbonates

Question 8

What is an acid

Answer 8

Any substance that produces H+ (hydrogen) ions in solution

Question 9

What is an alkali

Answer 9

Any substance that produces OH- (hydroxide) ions in solution

Question 10

What is a base

Answer 10

Any substance that neutralises an acid

Question 11

Where on the pH scale is acids

Answer 11

0-6

Question 12

Where on the ph scale is alkalis

Answer 12

8-14

Question 13

Where on the ph scale are neutral substances

Answer 13

7

Question 14

What are salts made from hydrochloric acid called

Answer 14

Chloride

Question 15

What are salts made from sulfuric acid called

Answer 15

Sulphate

Question 16

What are salts made from nitric acid called

Answer 16

Nitrate

Question 17

Formula of hydrochloric acid

Answer 17

HCl

Question 18

What is the formula of sulphuric acid

Answer 18

H2SO4

Question 19

What is the formula of nitric acid

Answer 19

HNO3

Question 20

Explain the method of making a copper salt

Answer 20

1. Using a measuring cylinder, measure 20cm3 of acid into the beaker
2. Stand the beaker on a tripod and gauze warm gently
3. Add half a spatula of copper oxide powder into the acid and stir using the glass rod
4. Keeping the acid warm continue to add copper oxide until no more dissolves
5. Allow to cool and then filter rue mixture and discard the residue
6. Pour the filtrate into an evaporating basin heat until crystals begin to appear on the rim of the solution
7. remove from heat and leave to crystallise